OpenAI to acquire Promptfoo

OpenAI is acquiring Promptfoo, a tool designed to improve prompt engineering and testing. This acquisition aims to enhance the quality and reliability of AI-generated outputs. It matters because better prompt tools can lead to more effective and accurate AI applications.

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PublishedMonday, March 9, 2026 at 11:00 AMMar 9, 11:00 AM

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OpenAI is acquiring Promptfoo, an AI security platform that helps enterprises identify and remediate vulnerabilities in AI systems during development.

Accelerating agentic security testing and evaluation capabilities in OpenAI Frontier

We’re acquiring Promptfoo, an AI security platform that helps enterprises identify and remediate vulnerabilities in AI systems during development. Once the acquisition is finalized we will integrate Promptfoo’s technology directly into OpenAI Frontier, our platform for building and operating AI coworkers.

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OpenAI to acquire Promptfoo

Original article excerpt